Stop motion for braiding machines



Feb. 14, 1-950 J. ROBIDEA\U 2,497,560

STOP MOTION FOR BRAIDING MACHINES Filed Aug. 26, 1948 A-r TORNEYS.

Patented Feb. 14, 1950 U NIT ED STAT ES PAT ENT FF] C E -2,497,5c0 STOPMOTIQN FOR] MACHINES Joseph Robideau, Cumberland, R 1 AppliciiffiinlAll'guS'tZfi, 1948, 'SeriaZINo. 46,282

8 Claims.

1 This invention relates more'particularly that type in which there isan upstanding guide post on the 'quoitxplateand vide a meansfor-istoppingvthe machine when the yarn which extends 'through issguidedby the guide posts fails; Another object of this invention is 'to utilizthe "stop motion already provided actuated byea mechanism on the carrierfor the stopping of the machine;

Another object of the invention is'to provide a stop motion "which ispartly carried 'by' the guide pbst and' partly :-carried by the' carrierbut which willcome in to co-active relation "upon the breakingof theyarn whichiis guided through the guide post.

Another object of this invention is'toutilize gravity as the force whichmoves the parts-into stop motion actuating position.-

With these and other objects' in View, them vention consists of certainnovel features of con struction, as will be "more f ullyfdescribed andparticu larlylpointed out in the appended claims;-

In'the accompanying drawings? I Figure 1 is anelevation with the :lowerpart ofthe machine in section showing the jragmerital portion of'a'braider machine which incorporates this invention;

.Figurez is a sectional view on'line 2--2 of Figure 1;

Figure 3 iswan elevation of a fragmental part ofaa acarrier illustratingthe -;attachment to the carrier which incorporates theinvention herein;

Figure 4 is an end view of that portion of the carrier :shown in Figure3; land- :FigureS is a sectional View on line -5-- 5-of Figure 3 of thecarrier shown in Figure 3.

In proceeding with this invention 1 vprovide a lever whichispivoted onthe guide ,post through which the warp yarns are guided in a braidermachine 'and-l-ihold this lever in raised position bya Jlink beneathwhich'the'warp yarn-is looped o a braiding machine,

and raised by "the tension" of the warp yarn as her or arm on thecarrier in an elevatedpositi'on so thatit will not "engage the stopmotion mechanism' of the machine. However; when the momher on thepostengages the trigger and moves:

the same, the arm on the carrier 'is-then permitted todrop'to a positionto engage the stop motion of the machine and cause the'machineto bestoppedjus'tthe same as if the weight on the carrier had droppedvto itslower position by failure of yarnof'the bobbin on thecarrier.

With-reference to the drawings, I0 designates the top plat'e of'a-braider carrier machine-in which there is #provided the serpentineraceway Il'for guiding a braider carrier 12 by means ofgear mechanism 13 located between the topplate H! and bed- .plate M; the carrier being,moved by means 'of the :horns' l.5 on the gears to pass: the .samethrough thezserpent'ine raceway for intertwining the 'yarn which iscarried by 'th braider'carrier. v I The braider carrier [2 consists .ofa base t5 having flanges Hi and I! to engage 'eitherlsi'de of the'topplate I O. A bobbin spindle .IB-weX- tendsupwardly from the standardportion 19 of the base to receive the bobbin 20 which ,is' rotatablymounted upon this spindle. This bobbin has iratchet teethIZI .at itslower end to be engaged by the pawl :22' .t0':c0ntr.01 the let-off ofthe yarn 'on the bobbin zll. This pawl is-actuated-bylthe link 22slidable on the guide rod-:23 and pressedzdownwardly' by 'a :spring'"24; This link is actuatedhy the weight 25 guided on the guide rod 26and pressed-downwardly by .theilong spring 231. This weight carries"the-usual hook beneath which the yarn extends so that as the yarn istaken up at the may pole, the weight lift-upwardly, to trip the pawl andpermit more yarn to be fed in a usual manner. The weight 25 carries atits lower portion a means for actuati-ng the--stop1m0tion of the machinein ausual mannerxandas the weightis usually lifted and not in itslowermost position, the stop motion will not be actuated until the yarnon thebobbin breaks-when the weight will drop to its lower position' tocause actuation of the stop motion. I have attached to the usual braidercarrier an arm- 30 which is generally L-shapedas shown in- Figure .5having-a portion 31 and ..a,-nother,por-, tion 32-'at right anglesthereto, which second portion is pivoted-to the standards [,9 :onthe,pivot 3 pin 33 which extends through the latch 22. When this arm 30 isin its lowermost position, as shown in dotted lines in Figures 1 and 3,its portion 3| will serve the same function as the stop motion portionof th weight 25 and will engage the stop motion of the machine to stopthe machine.

In order to hold this arm 3|] in raised position, which is inoperativeso far as engagement with the stop motion is concerned, I have provideda trigger 35 having a mid portion 36 which is pivoted or rockablymounted about a vertical axis as at 3! (see Figure 3 or 4) with a fingerportion 38 extending beneath the arm 30 to support the same and a secondfinger portion 39 extending outwardly away from the standard l9 so thatif this portion 33 is engaged and the trigger rocked about its pivot 31,the arm 30 will be released and will drop by gravity. In order to retainthe trigger in a position whereby it engages the arm 30, I have provideda spring designated generally 40 which has a mid portion 4| pivoted inthe standard l9 as shown best in Figure 4, with one arm portion 4-2extending up to engage the finger 39 to swing the trigger so that itsfinger 38 will extend beneath the arm 30 and support it; while at theother side of this pivoted portion 4| there is a finger 43 which engagesthe base of the carrier and serves to maintain a tension on this springfor swinging the trigger as above described.

In the center of the quoit plate 45 there is a post designated generally46 through the center 4! of which a warp yarn 48 (see Figure 1) extends.This warp yarn is drawn from a reel or some supply beneath the baseplate of the machine and usually is provided with some tension means toafford some control upon it. In the present case, this post serves as asupport for a member or lever 49 (see Figures 1 and 2) which is pivotedas at 50 on the post and will tend to swing by gravity into the positionshown in dotted lines in Figure l, and when in this dottedline positionwill engage the trigger finger 39 carried by the carrier of the machineand which has above been described. However, in order to hold thismember or lever upwardly, I have pro vided a link which engages thelever and which is vertically guided as at 52 and provided with a hook53, beneath which the warp 48 extends so as to lift this link by thetension of the warp yarn 48 and serve to maintain the lever or member inraised position as shown in full lines in Figure 1 and out of the pathof movement of the trigger finger 39. However, should there be a failureof tension or a failure by brealn age of the warp yarn 48, then the link5! would permit the lever or member 49 to drop into the dotted lineposition shown in Figure 1 so that it would then engage the finger 39 ofthe trigger to swing the trigger to permit the arm 30 to drop into aposition to cause it to engage the stop motion of the braider carrierand stop the machine.

I claim:

1. In a braiding machine, a stationary post through which yarn isguided, a movable braider carrier, a stop motion actuating arm pivotallymounted on the carrier to be rocked about a substantially horizontalaxis, a trigger mounted for rotational movement about a substantiallyvertical axis and movable into engagement with said arm to hold the samein inoperative position, said trigger having a projection thereonengageable to rock said trigger out of engagement with said arm topermit the same to be rocked by gravity to be positioned in theoperative position, a guide post on said machine, a member movably mounted on said post in the path of said projection, means engaged by theyarn passing through said post to hold, by tension on the yarn, saidmemher out of the path of said projection but permitting the member tobe moved into the projection path upon failure of said tension wherebyto engage the projection to cause the arm to move into operativeposition.

2. In a braiding machine as in claim 1 in said member is pivotallymounted.

3. In a braiding machine as in claim 1 wherein a spring assists saidtrigger in maintaining said arm in inoperative position.

4. In a braiding machine, a movable braider carrier, a stop motionactuating arm mounted for movement about a substantially horizontalaxis, a trigger mounted on said carrier for movement about asubstantially vertical axis and movable into engagement with said arm tohold the same in the inoperative position, said trigger having aprojection engageable to move said trigger to disengage the same fromsaid arm to perwheremit the arm to be moved by gravity to an op--erative position and means for engaging said projection to disengagesaid trigger from said arm.

5. In a braiding machine, a stationary post through which yarn isguided, a movable braider carrier, a stop motion actuating arm pivotallymounted on said carrier for rocking movement about a substantiallyhorizontal axis, a trigger rockably mounted on said carrier and havingan ofiset portion movable to be positioned into engagement with said armto hold the same in an inoperative position, said trigger having aprojection engageable to rock said trigger to disengage said offsetportion from engagement with said arm to permit the arm to be moved bygravity to an operative position, and means carried by said post movableinto the path of said projection for engaging and rocking the same.

6. In a braiding machine, a stationary post through which yarn isguided, a movable braidercarrier, a stop motion actuating arm pivotallymounted on said carrier for rocking movement about a substantiallyhorizontal axis, a trigger rockably mounted on said carrier to be movedabout a substantially vertical axis and having an ofiset portion movableto be positioned into engagement with said arm to hold the same in aninoperative position, said trigger having a projection engageable torock said trigger ,to disengage said offset portion from engagement withsaid arm to permit the arm to be moved by gravity to an operativeposition, and means carried by said post movable into the path of saidprojection for engaging and rocking the same.

-7.- In a braidin machine, a movable braider carrier, 2. stop motionactuating arm'mounted for movement about a substantially horizontalaxis, a trigger mounted on said carrier for rock-' ing movement about asubstantially vertical axis and having an offset thereon movable to bepositioned into engagement with said arm at a location beneath said armto hold the same in an inoperative position, said trigger having aprojection engageable to rock said trigger to move said offset frombeneath said arm to permit the arm to fall by gravity in an operativeposition, and means for engaging said projection to rock said arm.

8. In a braiding machine, a movable braider carrier, a stop motionactuating arm mounted for movement about a substantially horizontalaxis, a trigger mounted on said carrier for rocking movement about asubstantially vertical axis and having an offset thereon movable to bep0- sitioned into engagement with said arm at a location beneath saidarm to hold the same in an inoperative position, said trigger having aprojection engageable to rock said trigger to move said offset frombeneath said arm to permit the arm to fall by gravity in an operativeposition, and means for engaging said projection to rock said arm, and aspring engaging said projection to assist said trigger in maintainingsaid arm in inoperative position.

JOSEPH ROBIDEAU.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 10 Number Name Date 1,961,620 Murray June 5, 19341,964,481 Plumb June 26, 1934

